BioGuard Calcium Hardness Increaser Balance Pak 300 — 12 lb fast-dissolving pellets for clear water and surface protection

BioGuard Balance Pak 300 Calcium Hardness Increaser is a 12 lb pellet formula designed to raise and stabilize your pool's calcium hardness for clearer water and protected surfaces.

Keeping calcium hardness in the correct range prevents plaster etching, liner wrinkling, and equipment stress while helping chemicals perform predictably. BioGuard's Balance Pak 300 comes in a convenient 12-pound container filled with quick-dissolving pellets that let you boost hardness without long cloudy periods. The formulation focuses on reliable, controllable increases in calcium levels so you can maintain a balanced pool that looks inviting and reduces the risk of surface damage.

How quickly will Balance Pak 300 raise my pool's calcium hardness?

Results are visible within hours as the pelletized formula dissolves faster than many granular products, minimizing prolonged cloudiness. Exact change depends on pool volume and starting hardness, so measure before and after adding product for precise adjustments.

• Adds calcium ions via a concentrated pellet that dissolves rapidly.
• Typical dissolution time: hours rather than days, depending on circulation and water temperature.
• Test water before adding and retest 4–24 hours after application to confirm levels.

Will this product protect my pool surfaces and equipment?

Yes — keeping calcium hardness in the correct range reduces the risk of plaster etching, liner deformation, and metal corrosion caused by imbalanced water. Balance Pak 300 supports equipment longevity by preventing corrosive low-hardness conditions and reducing abrasive scale formation from drastic swings in mineral content.

• Helps prevent acidic conditions that can etch plaster or damage finishes.
• Reduces tension on vinyl liners by minimizing swelling/shrinkage cycles.
• Promotes stable chemistry so heaters, pumps, and filters run under less strain.

How do I apply the 12 lb Balance Pak 300 safely and effectively?

Always test your calcium hardness, pH, and total alkalinity before treatment. Broadcast pellets evenly around the deep end with the pump running, avoid adding near skimmers, and never mix with other chemicals. For best results, add small increments, allow circulation, and retest — this approach prevents overshooting the target hardness.

• Wear gloves and eye protection when handling product.
• With pump running, pour pellets slowly into the deep water away from returns and skimmers.
• Wait 4–24 hours and retest; repeat small additions if necessary.

How much calcium hardness will a 12 lb container change in my pool?

The change depends on pool volume and current hardness. Use a water volume calculator and the product dosing guidance to estimate increases — smaller, staged doses give you better control and avoid oversaturation.

• Calculate pool gallons and measure current hardness before dosing.
• Add in stages and retest to reach the recommended range for your finish type.
• Contact local pros or the BioGuard label for dosing charts based on gallons.

Who is this for? BioGuard Balance Pak 300 12 lb is aimed at pool owners, maintenance professionals, and service technicians who need a dependable calcium hardness increaser in a pellet form that dissolves quickly. It suits plaster, concrete, and vinyl pools where maintaining proper mineral levels is essential to preserve surfaces and mechanical systems. Choose this product if you want a measured, easy-to-apply way to raise calcium hardness and protect your investment while keeping water clear and chemically balanced.